MOST HOUSE SPIDERS ARE CONTROLLED BY THE REMOVAL OF THE WEBS AND THE EGGS SACS. SEAL ALL CRACKS AROUND THE BASEMENT WINDOWS AND FOUNDATION WALL. ALSO TRY USING A DEHUMIDIFIER FOR THE BASEMENT TO DRAW SOME OF THE MOISTURE OUT. ALSO IF THAT DOES NOT WORK TRY A INSECTICIDE TREATMENT FOR THE BASEBOARDS AND WINDOWS FOR THE INTERIOR, AND A EXTERIOR TREATMENT AROUND THE FOUNDATION WALL AND WINDOWS.